.answer{
    /* display: flex; */
    width: 400px;
    height: 100%;
    width: 100%;
    margin: 20px;
    background:grey;
}
div .label{
    /* flex: 1; */
    display: inline-block;
    width: 10%;
    /* height: 200px; */
    line-height: 200px;
    text-align: center;
}
div pre{
    /* flex: 9; */
    display: inline-block;
    width: 80%;
    /* height: 200px; */
    /* text-align: center; */
    font-size: 24px;
    vertical-align: middle;
}